Process for the formation of steel bars and the like.



UNITED STATES PATENT orrron.

WILLIAM K. RILEY, OFSA1\T BERNARIDINO, CALIFORNIA, ASSIGNOB OF ONE-HAL'F T0 PIIIL 1VIARX,

OF TEIIACIIAPI, GALIFORNIA.

PROCESS FOR 'IHE FORMATION OF STEEL BARS AND 'IIIE LIKE.

Specficaton of Letters Patent.

PatentetJune 25, 1912.

Original application filed. October 31, 1910, Serial No. 589,902. Dvided and ths applcation fi1ed November 27, 1911. Seria1 I\T0. 662,636.

K. RILEY,

This application refers particularly t-0 clivisional matter from my application f0r Unitecl States for the formation of steel bars and the like, lilecl ctober 31st, 1910, and hearing Serial N 0. 589,902.

Containecl within 1ny broad nvention for the 'ormation of bars for clrill steel or other purposes are tvvo speciio or1ns of proeess.

Broaclly 1ny process consists in forming a flange or other projeoting portion on the outsicle of a bar anti forming a groove acljacent the flange and then tu-rning the flange over the groove to form a cover, thus forming a longtuclinal duet through the bars.

This invention takes tvvo preferrecl spe oifio orms, one in whioh the fiange or flanges and the groove are forme l simultaneonsly ancl the other in which the flange is first formecl ancl the groeve is then formeel ancl the fiange or flanges are then turnetl over the groove. This applicaton refers specifically to the form of process in Whioh a fiange is first for1necl, then a groove is formeel adjaoent the flange and the flange is then tnrned over the groove to form a cover therefor.

In the accompanying clravvings I have shovvn sections of steel bars illnstrating the dierent steps of my process trom inoeption to finish.

The process may be accomplishecl loy any known ancl clesiralole means; the bars may be rollecl to shape in a rolling mill, tl 1ey may be formeel by machine forging or cly1ng or they may be formed eornpletely loy hand. The process and its essentials re1nain the same however carriecl out.

In the aecompanying drawings: Fignres 1, 2, 3 1 ancl 5 illnstrate steps of my proo ess for the for1nation of a bar of one configuration. Figs. 6, 7, 8, 9 and10 illustrate the same for a bar of another oonfignratiori.

It will be unclerstood that in these drawings I have illnstratecl my pr0oess as if it consisted of five separate and distinct steps;

Letters Patent on prooesses but it Will be understoocl that the arrangement of steps is more or less arbitrary ancl may he variecl to snit oonclitons. In so1ne eases there may be 110 clistinct steps at all the process may be a oont-innous one rom beginning to end. In other eases there may be a large mnnloer of steps with comparatively small changes of the material by each step. With this in view, and also with the fact in mintl that the p-roeess may be applied to the formation of many cliflerent for1ns of bars not illustratecl in the drawings, the forms shown in the drawings Will be explained as typfying the process rather than as showing its limitations.

In the clrawings 5 ancl 5 clesignate the forrns of the bars trom whioh my process starts. The bars may be supplied to the process in this form or they may be rollel or otherwise shapecl to this form as the initial step of the process. The next step consists in redncing the diameter of the bar '5 01 5 ancl forming a projeeting rib or flange 6 thereon. Reference is 110W made particnlarly to the first five igures. As the next step of the process, a groove7 is formed acljacentthe fiange 6. In the particular form shown ether grooves 8 are also formeel around the periphery of the bar, it being desirecl in this form to have the loar cruei form in cross seeton when finished. It will he observecl, however, that it is not neeessary t0 form these ether grooves; the essential being the formation of the flange 6 anol the groove 7. The edge of flange 6 is formecl with a bevel 9 ancl a corresponding bevel 10 is for1ned at the opposite eclge 01 groove 7. VVhen the flange 6 is turnecl clown over the groove as is shown in Fig. 5, these two bevels engage to form a oint whioh may be made either fluicl proef or not. In some cases it is clesirable to welc1 the joint, ancl in ther cases it is only desirable to press the two parts elosely together. The step between Figs. 3 antl 4 is 1nerely one of recluetion to the desired size. 11: may 01 may not be used. I have shovvn the Sectons in the positions which they woulcl 0ecupy in passing through rolls placed npon vertical axes. This be1ng the case, the bar wonld necessarily be rotated t-hrough one quarter of a revolnt-ion het-ween Figs. 4: anl

on to the .the formation of any bars.

groove. However, the turnng of the flange may be effected in varo us ot-her manners by machnery or by hand.

In F gs. 610 I have llustrated the proc ess of format-ion of a 1nodified form of bar in whch the finshed bal is cylndrical i11- stead of grooved as in the form shown in Fig. 5. In this form of the process the flang 6 is first f'ormed and then the groove 7 is formed adjacent the flange. The

flange and groove hzwe the beveled surfaces depressons of any character, sze and configuraton.

Havng described my nventon, I claim:

1. The herein descrbed process for the folmaton of steel bars and the like, comprising first fonnng a flange projectng from the bar, then forming a groove adjacent the flange, and then turnng the flange over the groove to form a cover therefor.

2. The heren descrbed process for the formation of steel bars and the lke, comprisng first forming a longtudnal fiange projectng froni the bar, then forming a longitudnal groove in the bal adjacent the flange, and then turning the flange over so that ts edge engages the opposite side of the groove.

In wtness that I claim the foregong I hzwe hereunto subscrbed my name this 14 day of November 1911.

VVM. K. RILEY.

\Vtnesses H. C. BOONE,

P. H. GREEN.

Gopies of this patent may be obtained for five cents each, by addressing the Comnissioner of Patents,

Washington, D. 0. 

